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15 November, 06:54

A person's heartbeat is 89 beats per minute. If his/her heart beats 3.1e9 times in a lifetime, how long (in whole years) does the person live? Disregard leap years.

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  1. 15 November, 07:09
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    In this question, you are asked the time but given the speed (89beat/min) and the number of beats (3.1 x 10^9). Then the equation would be:

    Time = number of beats / speed

    Time = 3.1 x 10^9 beats / (89 beats/min) = 3.483 x 10^7 minutes.

    Then convert it to years, disregard of leap years it would be : 3.483 x 10^7 minutes / (60 minutes/hour) / (24 hour/day) / (365 day/year) = 66.26 years
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